There are many variables that come into play when answering this question. Keep in mind that most televisions manufactured 5-10 years ago were made to a much higher level of quality than newer models. Because of this, older TV's that are a good brand are well worth repair. If the picture recently had good color and contrast, this is usually and indication that the picture tube (or tubes) is in good condition. However, an unclear picture does not necessarily mean that the picture tube has gone bad. Often a blurry picture, or a picture with distorted color, is caused by a convergence issue and has nothing to do with the picture tube. It has always been our philosophy to be honest and upfront in letting our customers know whether a unit is worth being diagnosed. If it is not a unit worth repair we won’t be bashful letting you know!